Cache performance test harness using Curl / OpenSSL

[inorton]

Cache performance test harness using curl and/or openssl for representative tests.

Curl builds are slightly faster than openssl ( 90sec uncached vs 4 minutes)

The curl build test only requires that you have visual studio installed and have built the clcache py2exe executable.

[webmaster128]

I am working on a similar test using Botan, because

curl

• Makefile.vc mode: cannot be build in parallel
• Makefile.vc mode: Cannot use custom CC before the upcoming release (see 1, 2, 3)
• ccache: Cannot use custom CC before the upcoming release (see set CC)

openssl

• depends on perl

Botan on the other hand

• Custom CC (so CC="python path/to/clcache.py" can be used – no environment changes)
• is configured using Python
• Makefile can be build using nmake or jom (thus multiple jobs)
• no dependencies apart from Python 2.6–3.6, jom and MSVS 2013+
• module system allows reducing the build time (full build on a 2 core local VM: 24 min cold cache, 1 min hot cache)

I just wait for randombit/botan#586 or randombit/botan#587 in order to get proper cache hitting.

[inorton]

I did manage the get botan running in this pull request (im using an earlier version of this in cclash's tests now). Good luck though, I just wish I had a faster computer to do this all more often :)

[webmaster128]

May I reuse code from this PR for the Botan version? I am especially interested in the Python implementation of Download+unzip to keep dependencies low.

[inorton]

sure, feel free